Manufacture of paper cones for yarn-winding machines.



PATENTED MAY 5, 1908. 4

P. SMITH. I

MANUFACTURE OF PAPER GONES FOR ARN WINDING MACHINES.

APPLICATION FILED DBO. 19', 1907.

UNITED STATES PATENT OFFICE. WALTER F. SMITH, OF HARTSVILLE, SOUTH CAROLINA, ASSIGNOR OF ONE-HALF TO SOUTHERN NOVELTY COMPANY, OF HARTSVILLE, SOUTH CAROLINA, A CORPORA- TION OF SOUTH CAROLINA.

Specification of Letters Patent.

Patented May 5, 1908.

Application filed December 19, 1907.. Serial No. 407,105.

. of which the following is a specification.

My invention has relation to the paper blank from which the cone is formed, the obj ect being to facilitate the manufacture of the cone, to permit its ends to be readily cutand squared while still on the mandrel on which the blank that forms it is wound, and to produce a cone of uniform thickness throughout.

For this purpose the blank which I have devised is of sector-like shape, with its two straight edges at a slight angle to each other, and a tongue upon that one of said edges which is upon the inside of the formed cone.

The nature of my invention and the mannor in which the same is or maybe carried into effect, will be readily understood by reference to the accompanying drawing inwhich Figure 1 is a perspective view of the conical former or mandrel on which the blank is Wound to form the paper cone-showing in dotted lines the pos1t1on occu ied by the b blank at the commencement of t e o eration, with the tongue entered in place in t e slot in the mandrel desi ned to receive it. Fig. 2 is a plan of the b ank in its preferred form. Fig. 3 is a view of the cone after it has been wound, but before it has been squared. Fig. 4 is a cross section on line 44, Fig. 3. Fig. 5 is the finished cone.

The conical former or mandrel is of any suitable dimensions as required for the cone to be produced. It has in its exterior a longitudinal slot 1 extending from end to end of the mandrel, and, between its ends, two annular scores or shallow grooves 2 parallel with each other in planes at right an les with the am's of the former. These sha low grooves indicate the lines on which the ends of the cone are cut off and squared, and they therefore are located upon the mandrel at such distance apart from each other as required for.

the length of finished cone.

The blank B is cut from a sheet of pa er of suitable texture. It is sector-like in s ape. It is somewhat less than semicircular, its two straight edges 6, c, standing at a sli ht angle to each other, the point at which t ey meet corresponding to t e apex of the cone to be walls of uniform thic formed. In the formed cone,'the ed es 1), c, are upon the outside and inside of t e cone respectively, extending lengthwise of the same and in such position that they will be parallel to, without appreciably overlapping,

one another, thus roducing a cone With liness throughout. The curved edge of the blank is lettered a. The edge I) is preferably the deckle edge of the aper from which the blank is formed. Upon the other edge 0 is a tongue (1, the len th of which is not greater than, and prefera ly coextensive with, the distance between the annular 'rooves 2 upon the pe riphery of the conicalmandrel A-the tongue being intended to enter the slot 1 in the mandrel and to occupy that portion of it between the annular grooves 2, as indicated in Fig. 1. The tongue may be formed by cuttin two .jogs d, d in the edge 0 as shown in ful lines Fig. 2, or by continuing the jog d by a cut on the dotted line d thus severing from the body of the blank the small triangular piece beyond the dotted line (i In either event however the jogs d, d define the limits of the tongue,'which 1s so located upon the edge 0 etween the edges band a, that when the blank is wound up into cone form, the tongue will be shorter than the uncut cone and located within the transverse lines of cut 2, 2.

The blank at the outset of the windin operation occupies the position indicated by dotted lines in Fig. 1 with the ton ue entered into that portion of the slot 1 in t e mandrel which lies between the annular shallow grooves or lines of cut 2it bein understood that the blank is coated on both faces with sented in ig. 3 when the winding is finis ed,

.flour paste or other suitable adhesive matthe longitudinal edges 1), c, of the blank, one

on the outside and one on the inside of the cone, being parallel to and practically in coincidence with eachother, as indicated in Fig. 4. In Fig. 3 the dotted lined, d, d indicates the location on the inside of the cone of the tongue and jogs; and the dotted lines 2, 2 indicate the lines on which the cone is to be cut and squared. The ton' no (1 after the withdrawal of the ,cone from t e mandrel at first stands at right angles to the body of the cone, but as it .dries it takes of itself a flat position and finally lies close against the inner face of the cone.

It is requisite in a cone of'this descri tion that all portions of itshould be balance and the ends should be true and square. The finishing of the cone for this purpose I can effect upon the same mandrel upon which it is wound and while it is still in wet or moist condition, the tongue (1 by reason of its being confined to the portion of the slot l'between the lines 2, permitting the severing of the unfinished ends of the cone which protrude beyond those lines to be effected with entire ease and certainty.

Having described my invention and the manner in which the same is or may be carried into effect what I claim and desire to secure b Letters Patent is A b ank for the manufacture of cones for yarn, consisting of a sector-shaped paper 20 sheet having its two straight edgesb, c, at a slight angle to each other, and a tongue (1 upon the edge a, substantially as and for the purposes hereinbefore set forth.

,In testimony whereof I afiirc my signature 25 

